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2 Sheets-Sheet 1.

(No Modl.)

O. SYVERSON.

FORGING MAGHINE.

Patented Oct. 18, 1887.

IIVI/ENTUR WITNESSES.-

: I W Z I WWWWM ATTORNEY (No Model.) 2 SheetsSheet 2.

O. SYVERSON.

FORGING MACHINE.

No. 371,638. Patented (m. 18, 1887.

ATTORNEY UNITED STATES PATENT EEicE.

CARL SYVERSON, OF MADISON, WISCONSIN, ASSIGNOR OF TWO-THIRDS TO MADISON H. BALL AND HIRAM W. BALL, BOTH OF SAME PLACE.

FO-RGING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 371,638, dated October 18, 1887.

Application filed November 13, 1886. Serial No. 218,834. (No model.)

To all whom it may concern.

Be it known that I, CARL SYvERsoN, a citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin,

have invented a new and useful Forging-Machine, of which the following is a specification.

My invention relates to forging-machines in which radial hammers reciprocate to and from a central forging-point.

Heretofore in such machines the hammers have been actuated either by the use of springs and earns or by gearing and connecting'rods, both of which methods are objectionable, because a blow of the same power is always U struck under any given adjustment of the operative parts and cannot be changed except by stopping and readjusting them, and because each hammer operates independently of the others, rendering it impracticable to secure simultaneity of action, and because the power required'to operate the hammers when their striking power is derived from springs is equal to the combined power of all the springs.

The object of my invention is to provide a forging-machine in which the hammers are united, and their action is therefore positive and simultaneous, and which will permit of the changing of the power of the blows while fthe machine is at full speed, and that shall require the least expenditure of power to effectively operate.

My invention consists of a forging-machine havingits hammers arranged in radial guides upon a bed-plate to reciprocate to and from a central forging-point, the hammers being connected together by links pivotally attached tothe hammer-heads in such manner that the links form a parallelogram, having its diagonals coincident with the lines of motion of the said hammer-heads.

A forging-machine having its hammers arranged and connected as above described can be operated by motive power applied to any one of the hammer-heads in such manner as to cause it to reciprocate between its guides,such motion of any one of the hammer-heads being communicated by means of the links to all the others and causing the opposite hammers to meet at and recede from the central forging-point in alternate pairs.

My invention consists, further, of a means of applying motive power to the arrangement of hammers above described, which I accomplish as follows: A crank-shaft is attached to the back of the bed-plate. From the crank or 5 5 cranks thereon a connecting-rod extends to either one or both of the hammer-heads whose line of motion is at right angles to such crankshaft,and passes through a ing projecting from the hammerhead back through a slot in the bed-plate. Upon each side of the lug a powerl'ul spring is placed around the connectingrod, which springs are secured in place by setnuts on the connecting-rod, the lug ends of j said springs being held in position by an 0s cillating socket which bears upon the lug and through which the connecting-rod passes.

The connecting-rod is not directly attached to the lug, but communicates motion to it by means of the springs bearing upon the opposite sides of the socket, which allows the connection sufficient freedom of motion to utilize the springs as a cushion for the blows given by the hammers, and to permit the weight of the blow to be regulated through the tension obtainable on the springs by means of the setnuts on the connecting-rod. By placing the tension on one of the springs in excess of the tension on the other the machine can be so adjusted that one pair of hammers will strike a heavier blow than the other pair.

The length of the stroke can be regulated by means of the extension-link, which consists of three pieces. The middle portion having a right-and-left screw on its ends and Working in the two outer portions of the link operates to expand or contract the length of the link.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a front elevation of a device embodying my invention. Fig. 2 is a rear elevation of the same. Fig. 3 is an enlarged sectional view'of a hammer-head upon the line 1 2, Fig. 1, showing the details of the lug and connecting-rod joint. Fig. 4 is anenlarged longitudinal section of the extension-link. Fig. 5 is a cross-section of the hammer head and guides upon the line 3 4, Fig. 1.

Upon the bed-plate A the radial guides B B B B are secured by bolts or otherwise,.i'between which guides the hamnicr -thads (IO G are fitted to slide freely back and forth, such hammer-heads being dovetailed upon their inner ends to receive the dies or hammers D D D D. Thelinks E E E E are pivoted at each end to the hammer-heads O O O O insuch manner that the said li nksE E E'E shallfor'm the sides of a parallelogram having its diagonals coincident with the lines of motion of v the hammer-heads G O O O. From the backof two of the hammer-heads O O a projection or s F gendstth pug h slQtGi the bed-plate A. Throughsaid lug'Fthecon' necting-rod H extends to a sufficient distance: beyond the lug to afford room for the spring 31 e I The outer end of the springsJ J areh eld in jplace'bylset-nuts upon the sp mmingun, 7'

,Which is threaded fortliat purpose, the inner- 2o i@:1.ns .Theen f e. s is hdwna jhaving'a cylindrical-storm, thefsocket K bieihg ffoimd to oscillate thereon, and ,thevh'ol'epr, slot in the lug F, through which the eonne tj 1ing-rod H passes, is, shown of, such. form and V fsizeas'will permit the oscillation of the con 30.11'iecting-rod H to. the exteiibmndered neces s'ary .bythe .throw oi the 'crank L, Fig, 2.1

Thisfo'rm of construction is necessary'jwhen the powen'is derivedffrom acr'ank sh'aft, as shownin the drawings; but. when, the power, ifijs'received direct'fronn a st'am cylinder at-i ftac'hedf to the bed-plate A there ,needbe no os'ci11ation {of the c onnectin'g-rod H, asit 'will. fhevbuta continuation of the piston and have 'on'ly'a longitudinal reciprocating .rnotion.,

Fig, 2 shows the crank-(shaft M, having two cranks placed opposite .to each other, from whichlthe, connecting-rods H Hlextend toand fare, connected with the opposite hammerheads of a pair. 7 I W I, 1 5 The links E E E E may be constructed of but one piece, but the use of ,thevfexten'sion link, shown on the drawings as Fig.4, pro- ,duces, a machine of much greater capacity bothas to size and variety ,of work by reason if the adjustabilityofthe stroke of the hammers.. a V. a

The crank-shaft M can be pla ced at one side Qof thecenter of the bed-plate Ato make, an

open-center machine, and if connected [to a ,pair of hammer-heads, as shown, the connecting-rod's H H can be offdift'erent lengthsTand one of them curved to avoid the centmrope .jing. As it is only necessaryto impart motion [to one' of the hammer-hea'ds'to cause themall Qto operate, there need be onl'y'one connectingrod used where an open-center machine "is desired, p l C .,,:The operation of the device is as follows: When power is applied to the crankshaft M, it is transmitted to the hammer-head by the orln'g'ends'of said springsfigci g held in-poisition'by the socket K Qwhichis shownaslconv'i i f tw pa at part e fi eqi 'al 'y TYI jeflicient. when so constructed) bearing iipphl fs gadi st dl 'mmen the r iconnectingrod H, and suchhamine'r-head imi 'p'art's itsmotion to all the others through the links E E E E, causing said hammer-heads O G O O to alternately reciprocate to and from the center in pairs. The links E E E E causethe hammers, to reach the center at,.eX- lactly the same instant, a result not'heretofore attained in machines ofthis class. The Weight of the blows given by the hammers .maybech anged by moving the set-nuts on the connecting-rod H so as to tightenor loosen the springs J J, the outer springs being tight- .srxeiwhen t. sw sh au ev pair- :imer'st'o "which the connecting-rod is attached to strike a heavier blow than the other pair, the inner springs being made the tightest .when the opposit e fe s es red-1 1 19x92 l shy ea th' linkic i paths; meme ts Striking h at the c lmi a iqsfixf. i i ar y doub ng.thsle t qti ss g ven, 'Sqt ata h mmer-l .1, n l han p any other m qhinejo 12h Ttofore devisedcan'be used tof-p o, jfifb. As the' w l 9f the t z k as hfim rs t e h. w Qve v om s h tni q al ni bl s); e w kih ap is; as i a th in tan the re o a d .q ir'ed' perat e d i s vmi ch s essa 'y t o ier b of t e mo g-ram a d aise! t s red p e Wh n t s fiss le 1. machine with only'onepair'ofhamm: s plef'guide-blocks or fdeadfheadsi, ay loe I05 ub t d f he. obhr p ir" ;lh l ii er hea fis a an of co ctinssfliss i; an th d i e will he lha ua l .e :forth e operation of the single pair of hams a ,1 I

E [aving fully-describedthe const h operation of my invention, whgat I c ,new, and desire to secure by Letters P 1S? '1. i 1- n f sin'gw a h ne. that-ham, ranged inisu de 11 b d-P a t .1

, 1 itgfie t e o e ,d re lybe ne 11th.? s ,mers'and the driving mechanism, substan 1 ally 3, In a iforging-machine,the comb Dfth h mme s-OO G Gmarryi dies orhammers D D D D, and reciprocating r30 between the radial guides B B B B, the latter secured to the bed-plate A, with the pivotally-attached connecting-links E E E E, and the cushioned reciprocating connecting joint, which consists oi the lug F, springs J J, socket K,

the crank-shaft M, to which the motive power is applied by means of the pulley N, substantially as set forth.

CARL SYVERSON.

Witnesses:

G. L. BURDIOK.

and the connecting-rod H, said connecting-rod I A. T. MORRIS, H receiving its motion from the crank L upon I 

